Daimrod <daim...@gmail.com> writes: > Thorsten Jolitz <tjol...@gmail.com> writes:
[...] >> but when processing the parse tree as a list in elisp, how can I >> detect the fact that >> >> ,------------ >> | :parent #2# >> `------------ >> >> refers to >> >> ,----------------- >> | #2=(org-data nil >> `----------------- >> >> i.e. points back to an already existing structure? > > AFAIK you have to track all pointers inspected to see if one has already > be seen. > > For example, I've implemented a version of equal[1] to compare this kind > of lists (to add tests to org-sync). > > [1] > https://github.com/daimrod/Emacs-config/blob/master/elisp/dmd-utils.el#L25 Oh my ... I knew this would complicate my life a bit ... Thanks for the link, this example function is indeed very helpful. -- cheers, Thorsten
